Pressure-responsive make-and-break device



June 1925- 1,540,315

W. F. CLARK PRES SURE RESPONSIVE MAKE AND BREAK DEVICE Filed April 2, 1921 Patented June 2, 1925.

, UNITED .STATES v I 1,540,315 PATENT OFFICE.

WARREN I. CLARK, OF WARREN, PENNSYLVANIA, ASSIGNQR TO AUTOMATIC ELEC- PENNSYLVANIA, A CORPORATION OF DELA- 7 ram HEATER country, or WARREN, WARE.

PRESSURE-RESPONSIVE MAKE-AND-IBREAK DEVICE.

Application filed April 2, 1921. Serial No. 458,063.

construction which may be constructed and assembled as a unit.

A further object of the invention is to provide aconstruction wherein a'oondenser may be conveniently associated with the switch.

Referring to the drawings, Fig. l is an elevation with portions in section; Fig. 2 is a rear elevation with the casing in section; Fig. 3 is an elevation with portions of the 2 device removed; Fig. 4 is a rear elevation of a portion of the device; Fig. 5 isa side elevation of a portion of the device; Fig. 6 is an elevation with portions omitted.

Referring to the drawings, 1 indicates a casing in which is mounted a Bourdon tube 2,. this tube being mounted at the lower end thereof as indicated at 3 and is adapted to be connected by means of the nipple of extension 4 with a tube containing an easily volatilized substance, which is not herein shown, as it forms no part of this invention.

Secured to the rear end of the casing, 1 is a cup shaped member 4, and within the cup shaped'member is a bracket 5 which at its '40 lower end is slotted as indicated at 6, with a screw 7 extending through the slot and mounted in the bottom of the cup shaped member 4. The bracket 5 at its upper end has an outwardly extendin .flange 8 which is provided with 'a-threade opening which receives a screw 9, the screw passing through a suitable opening formed in a porti'on of the cup shaped member 4; By manipulation of the screw 9, the bracket 5 may be raised and lowered with respect to the members upon which it is mounted.

. The bracket 4 has an outwardly extendmg arm 5' and a right angled flange 5*. Upon this flange there is mounted a flexible contact carrier 10 and a second contact carrier 11. .These contact carriers are suitably insulated from each other and from the flange 5* by means of insulating strips such as indicated at 12. V

The contact carrier 11 has a contact member 11 mounted thereon, while the contact carrier 10 has a contact member 10 mounted thereon. The contact carrier 10 extends above a pin 2 which is mounted at the end of the Bourdon tube and extends through the rear portion of the casing 1. When on expansion of the Bourdon tube, the pin 2* is elevated, it will engage with the contact carrier 10, raising the same and move apart the contact members 10 and 11". Conversely when the Bourdon tube returns to the initial position, the pin 2 moves away from the contact'carrier 10 allowing it to return to normal position. Engaging with the outer surface of the cup shaped member 4 is a cover 13 which at its open end is adapted to slide upon the sides of the cup shaped member 4, this cover is provided with an opening 13 upon the part thereof which normally comes above the head of the screw 9 so that the screw may be manipulated.

Provision is made in the device for supporting a condenser which is represented at 14. The condenser proper is secured upon a U-shaped member 15 bymeans of a plate 16 which is secured to the U-shaped member 15 by means of any suitable fastening devices such as indicated at 17. The arms 15 and 15 of the member 15 extend within the sides of the cup shaped member 4 and are secured in position by means of screws 18 which cooperate with the arms 15 and 15", the side of the member 4 and the outside cover member 13.

Thecondenser may be connected in shunt with the contact members 10 and 11 so as "to absorb the reactance current incident to bers from each other and from the flange, one of said contact carrying members being positioned to be engaged by the operating member carried by the Bourdon tube and a member mounted upon the casing and having threaded engagement with the bracket for moving said bracket to adjust the same with vrespect to the o erating member carried by the Bourdon tu e.

' 2. In a device of the character described, the combination with a casing, a Bourdon tube within said casing, an 0 erating member-carried by the end of the ourdon tube, and extending through the rear vall of said casing, a cup-shaped member attached to the rear wall of said casing, a' bracket mounted on the wall of said cup shaped member, a member mounted upon the casing and having threaded engagement with the bracket for moving said bracket and retaining it in a definite position, a pair of contact carrying members mounted upon said bracket, means insulating the contact members from each other and from the bracket, one of said contact members being ositioned to engage by the operating mem er carried by the Bourdon tube.

' 3. In a device of the character described,v

a casing, a Bourdon tube within said casing, an operating member carried by said Bourdon tube and extending throu h the rear wall of said casing, a bracket s idably mounted, means for moving the bracket and retaining it in adjusted position, a pair 0t contact carrying members carried by said bracket, means for insulating the contact carrying members from the bracket and from each other, one of the contact carrying members being i1 position-to be engaged by the operating member carried by the Bourdon tube, a detachable supporting member adapted to support a condenser and a cover which houses the said condenser carrying member and form a protection for the sliding bracket and contact carrying members carried thereby.

4. In a device of the character described, the combinationof a casing, a Bourdon tube within the casing, an operating member carried by the Bourdon tube and extending through the rear Wallof the said casing, a cup shaped member secured to the said casing, a bracket slidably mounted on the wall of the cup shaped member,-means for moving the said bracket and holding it in adjusted position, a pair of contact members carried by the bracket, means for insulating the-said contact carrying members from each other and from the bracket. one of said contact carrying members being in position to be engaged by the operating member of the Bourdon tube, a supporting member, a condenser carried by the supporting member, means for holding the condenser'to the supporting member, said sup orting member having arms which exten within the cup shaped member, a cover which slidably engages the outer wall of the cup shaped member, and means for supporting the member and means for retaining the condenser supporting member.

5. In a device of the character described, the combination with a casing, a Bourdon tube within the casing, an operating member-carried by the said Bourdon tube and,

extending to the rear wall of the casing, a cup-shaped member secured to the rear wall of the casing, a slidable bracket carried by a wall of the cup 'shaped member, a pair of contact carrying members car- 'ried by said bracket, means for insulating the said contact carrying members from each other and from the bracket, one of said contact carrying members being in position to be engaged by the operating member carried by the Bourdon tube, a U-shaped support, a condenser carried by the support, means for holding the condenser to the support, said U-shaped support extending within the walls of the cup shaped member, a, cover slidably engaging the outer wall of the cup shaped member and retaining members extending through the said cover and engaging with the U-shaped sup port for retaining the same.

In testimony whereof I hereunto aflix my si gnature.

WARREN CLARK. 

